Non-managerial workers must be consulted on, at minimum: determining the needs and expectations of interested parties; establishing the OH&S policy; assigning organisational roles, responsibilities and authorities; meeting legal and other requirements; setting OH&S objectives and planning to achieve them; determining applicable controls for outsourcing, procurement, contractors and visitors; determining what needs to be monitored, measured and evaluated; planning, establishing, implementing and maintaining audit programmes; and ensuring continual improvement. Non-managerial workers must be enabled to participate in: hazard identification and risk assessment; determining controls; determining competence requirements, training needs and evaluation of training; determining what needs to be communicated and how; determining control measures and their effective implementation and use; and incident investigation. Failure to evidence consultation on these specific items is the most common ISO 45001 surveillance non-conformity.